Pterygoneurum ovatum

(Hedwig) Dixon

Rev. Bryol. Lichénol. 6: 96. 1934,.

Basionym: Gymnostomum ovatum Hedwig Sp. Musc. Frond., 31, plate 2, figs. 1–3. 1801
Treatment appears in FNA Volume 27. Treatment on page 608. Mentioned on page 607, 609.

Leaves with distal lamina smooth or rarely papilose; awn smooth or rarely with a few teeth; lamellae 8–16 cells in height, not lobed, seldom bearing filaments. Capsule stegocarpous, emergent to exerted, ovoid, annulus present, operculum cells in straight rows; eperistomate. Calyptra cucullate or rarely mitrate.


Phenology: Spores mature spring.
Habitat: Soil (volcanic, dry saline), frost boil, low desert scrub areas
Elevation: moderate elevations (900-1600 m)

Distribution

V27 878-distribution-map.gif

Alta., B.C., Man., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Kans., Mont., Nebr., Nev., N.Mex., N.Dak., Oreg., S.Dak., Tex., Utah, Wash., Wyo., s South America, Europe, Asia, n Africa, Australia.

Discussion

Pterygoneurum ovatum is the most common species of the genus and serves to stabilize arid soils (S. Flowers 1973). The setae may reach 3 mm. Faint thickenings reminiscent of a rudimentary peristome can sometimes be found associated with spore sac remnants dug out of the operculum, and the laminal distal cells may by simply papillose abaxially as in P. lamellatum. R. T. Wareham (1939) found the characters of Pterygoneurum ovatum var. incanum Juratzka, the long awns and short setae, inconstant in both American and European material.

Selected References

None.

Lower Taxa

None.
... more about "Pterygoneurum ovatum"
Richard H. Zander +
(Hedwig) Dixon +
Gymnostomum ovatum +
Alta. +, B.C. +, Man. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Kans. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Oreg. +, S.Dak. +, Tex. +, Utah +, Wash. +, Wyo. +, s South America +, Europe +, Asia +, n Africa +  and Australia. +
moderate elevations (900-1600 m) +
Soil (volcanic, dry saline), frost boil, low desert scrub areas +
Spores mature spring. +
Rev. Bryol. Lichénol. +
Pterygoneurum ovatum +
Pterygoneurum +
species +